:Product: 20020124RSGA.txt :Issued: 2002 Jan 24 2200 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Environment Center and the U.S. Air Force. # Joint USAF/NOAA Report of Solar and Geophysical Activity SDF Number 024 Issued at 2200Z on 24 Jan 2002 IA. Analysis of Solar Active Regions and Activity from 23/2100Z to 24/2100Z: Solar activity was low. The largest flare of the past day was a long-duration C7 at 24/0439 UTC. Images from the SOHO spacecraft suggest that the source of the event was from just behind the east limb. Other areas only produced a few small subflares. IB. Solar Activity Forecast: Solar activity is expected to be low to moderate. An isolated M-class flare is possible in Regions 9787 (S06W06) or 9788 (N18W30). IIA. Geophysical Activity Summary 23/2100Z to 24/2100Z: The geomagnetic field was quiet. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be quiet to unsettled. III. Event Probabilities 25 Jan-27 Jan Class M 30/30/30 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 24 Jan 231 Predicted 25 Jan-27 Jan 225/225/225 90 Day Mean 24 Jan 223 V. Geomagnetic A Indices Observed Afr/Ap 23 Jan 004/006 Estimated Afr/Ap 24 Jan 004/005 Predicted Afr/Ap 25 Jan-27 Jan 005/005-005/005-008/008 VI. Geomagnetic Activity Probabilities 25 Jan-27 Jan A. Middle Latitudes Active 10/10/15 Minor storm 01/01/05 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/20 Minor storm 05/05/10 Major-severe storm 01/01/01